EP 4132906 B1 20240515 - PROCESS FOR SYNTHESIZING SULFONATED TRIARYL METHANE COMPOUNDS
Title (en)
PROCESS FOR SYNTHESIZING SULFONATED TRIARYL METHANE COMPOUNDS
Title (de)
VERFAHREN ZUR SYNTHESE SULFONIERTER TRIARYLMETHANVERBINDUNGEN
Title (fr)
PROCÉDÉ DE SYNTHÈSE DE COMPOSÉS TRIARYLMÉTHANE SULFONÉS
Publication
Application
Priority
- FR 2003643 A 20200410
- EP 2021058772 W 20210401
Abstract (en)
[origin: WO2021204712A1] The invention relates to a process for the preparation of a compound of formula [Chem I], formula (I), said method being characterized in that it comprises at least one step of oxidizing sulfonated triphenyl methane of formula [Chem V] with a quinone selected from 1,4-benzoquinone, 1,2-benzoquinone, a (C1-C4)dialkyl 1,4-benzoquinone, a (C1-C4)dialkyl 1,2-benzoquinone, a (C1-C4)monoalkyl 1,4-benzoquinone, a (C1-C4)monoalkyl 1,2-benzoquinone. The invention also relates to a new crystalline form of patent blue, sodium salt.
IPC 8 full level
C07C 303/22 (2006.01); C07C 213/08 (2006.01); C07C 303/06 (2006.01); C07C 309/49 (2006.01); C09B 11/10 (2006.01)
CPC (source: EP IL US)
C07C 213/08 (2013.01 - EP IL); C07C 215/74 (2013.01 - IL); C07C 303/06 (2013.01 - EP IL US); C07C 303/22 (2013.01 - EP IL); C07C 309/49 (2013.01 - EP IL); C09B 11/12 (2013.01 - EP IL US); C09B 11/22 (2013.01 - EP IL US); C07B 2200/13 (2013.01 - US)
C-Set (source: EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2021204712 A1 20211014; AU 2021253118 A1 20221027; BR 112022020469 A2 20221129; CN 115551830 A 20221230; CN 115551830 B 20240906; EP 4132906 A1 20230215; EP 4132906 B1 20240515; EP 4361127 A2 20240501; EP 4361127 A3 20240710; FR 3109150 A1 20211015; FR 3109150 B1 20220826; IL 297181 A 20221201; MX 2022012620 A 20221107; US 2023159444 A1 20230525
DOCDB simple family (application)
EP 2021058772 W 20210401; AU 2021253118 A 20210401; BR 112022020469 A 20210401; CN 202180027626 A 20210401; EP 21715910 A 20210401; EP 24162955 A 20210401; FR 2003643 A 20200410; IL 29718122 A 20221009; MX 2022012620 A 20210401; US 202117995881 A 20210401